<template>
    <div class="login">
        <el-form ref="loginForm" :model="loginForm" :rules="loginRules"  class="login-form">
            <h3 class="title">博客后台管理系统</h3>
            <el-form-item  prop="username">
                <el-input type="text" v-model="loginForm.username"
                          placeholder="用户名"
                          prefix-icon="element-icons el-iconyonghuming">
                </el-input>
            </el-form-item>
            <el-form-item  prop="password">
                <el-input type="password" v-model="loginForm.password"
                          placeholder="密码"
                          prefix-icon="element-icons el-iconsuo">
                          @keyup.enter.native="handleLogin"
                </el-input>
            </el-form-item>
            <el-form-item prop="code">
                <el-input
                        v-model="loginForm.code"
                        auto-complete="off"
                        placeholder="验证码"
                        style="width: 63%"
                        prefix-icon="element-icons el-iconverify"
                        @keyup.enter.native="handleLogin"
                >
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img"/>
                </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
            <el-form-item style="width:100%;">
                <el-button
                        size="medium"
                        type="primary"
                        style="width:100%;"
                        @click.native.prevent="handleLogin"
                >
                    <span >登 录</span>
                </el-button>
            </el-form-item>
        </el-form>
        <!--  底部  -->
        <div class="el-login-footer">
            <span>Copyright © 2018-2020 boke All Rights Reserved.</span>
        </div>
    </div>
</template>

<script>
    // import {request} from "../network/request.js"
    import Cookies from "js-cookie";
    import { encrypt, decrypt } from '../utils/jsencrypt.js'
    export default {
        name: "Login",
        data() {
            return {
                codeUrl: "",//图片
                cookiePassword: "",
                loginForm: {
                    username: "",
                    password: "",
                    rememberMe: false,
                    code: "",//验证码
                    uuid: "",//图片所对应的key
                    msg: ""//返回的提示信息
                },
                loginRules: {
                    username: [
                        {required: true, trigger: "blur", message: "用户名不能为空"}
                    ],
                    password: [
                        {required: true, trigger: "blur", message: "密码不能为空"}
                    ],
                    code: [{required: true, trigger: "blur", message: "验证码不能为空"}]
                },
                redirect: undefined
            };
        },
        created() {
            this.getCode();
            this.getCookie();
        },
        methods: {
            getCode() {
                // request({
                //     url: "/captchaImage",
                // },).then(res => {
                //     // console.log(res);
                //     this.codeUrl = res.data.data.image;//"data:image/gif;base64," +
                //     this.loginForm.uuid = res.data.data.key;
                // }).catch(err => {
                //     this.$message.error.message;
                // })
                this.$http.get('captchaImage').then( res => {
                    // console.log(res)
                    this.codeUrl = res.data.data.image;//"data:image/gif;base64," +
                    this.loginForm.uuid = res.data.data.key;
                });
            },
            getCookie() {
                const username = Cookies.get("username");
                const password = Cookies.get("password");
                const rememberMe = Cookies.get('rememberMe')
                this.loginForm = {
                    username: username === undefined ? this.loginForm.username : username,
                    password: password === undefined ? this.loginForm.password : decrypt(password),
                    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
                };
            },
            handleLogin() {
                this.$refs.loginForm.validate(async valid => {
                    if (valid) {
                        if (this.loginForm.rememberMe) {
                            Cookies.set("username", this.loginForm.username, { expires: 30 });
                            Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });
                            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });
                        } else {
                            Cookies.remove("username");
                            Cookies.remove("password");
                            Cookies.remove('rememberMe');
                        }
                        const res = await this.$http.post("login",this.loginForm);
                        console.log(res)
                        if (res.data.code!==200){
                            this.msg = res.data.msg
                            this.$message.error(this.msg);
                            this.getCode()
                            return
                        }
                        this.$message.success("登录成功")
                        window.sessionStorage.setItem("authorization",res.headers.authorization)
                        this.$router.push("/home")//跳转到主页面
                    }
                });
            }
        }

    }
</script>

<style scoped>
    .icon {
        width: 1em;
        height: 1em;
        vertical-align: -0.15em;
        fill: currentColor;
        overflow: hidden;
    }

    .login {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100%;
        background-image: url("../assets/image/login-background.jpg");
        background-size: cover;
    }

    .title {
        margin: 0px auto 30px auto;
        text-align: center;
        color: #707070;
    }

    .login-form {
        border-radius: 6px;
        background: #ffffff;
        width: 400px;
        padding: 25px 25px 5px 25px;
    }

    .el-input {
        height: 38px;
    }

    input {
        height: 38px;
    }

    .input-icon {
        height: 39px;
        width: 14px;
        margin-left: 2px;
    }

    .login-tip {
        font-size: 13px;
        text-align: center;
        color: #bfbfbf;
    }

    .login-code {
        width: 33%;
        height: 38px;
        float: right;
    }

    img {
        cursor: pointer;
        vertical-align: middle;
    }

    .el-login-footer {
        height: 40px;
        line-height: 40px;
        position: fixed;
        bottom: 0;
        width: 100%;
        text-align: center;
        color: #fff;
        font-family: Arial;
        font-size: 12px;
        letter-spacing: 1px;
    }

    .login-code-img {
        height: 38px;
    }
</style>
